Improvement in clamps for tubing



M. MA'ITSON.

CLAMPS FOR TUBING.

No. 191,356. Patented May 29,1877.

WITNESSES llll lii 'INVENTD N- PETERS. PHQTO-UTHOGRAPNER. WASHINGTON, DC.

UNITED STATES PATENT OFFICE,

MORRIS MATTSON, OF NEW YORK, N. Y.

IMPROVEMENT IN CLAMPS FOR TUBING.

Specification forming part of Letters Patent No. 191,356, dated May 29,1877; application filed May 22, 1877.

To all whom it may concern:

Be it known that l, MORRIS MATTSON, of New York, in the county of NewYork and State of New York, have invented certain new and .usefulImprovements in Clamps for Tubing; and I do hereby declare the followingto be a full, clear, and exact description of the invention, such aswill enable others skilled in the art to which it pertains to make anduse it, reference being had to the accompanying drawings, which formpart of this specification.

My invention relates to an improvement in stop-cocks for rubber tubing;and it consists in the combination of a pivoted cam and spring-jaws,whereby tubing can be clamped so tightly as to at once stop the flow ofwater through it, and the arrangement of the parts is such that the flowcan be instantly reversed by a movement of the cams, as will be morefully described hereinafter.

The accompanying drawings represent my invention.

a represents a piece of spring sheet metal, which has an opening, b,made through its center for the passage of the tube, and has one or bothof its ends bent at right angles for the purpose of clamping the tubebetween them without any danger of cutting or injuring it. This piece ofsheet metal a, after it has been stamped into shape, is bent double, soas to form two jaws, which extend along a suitable distance over thesurface of the tube. The lower one of these jaws is made of box shape orconcave, so as to conform to the shape of the tube and is rigid, whilethe upper jaw may be elastic, and has its end bent, as shown, so as topress the tube tightly down upon the lower jaw. As a part of or securedto the lower jaw is a stirrup, e, the ends of which project up above thetop of the upper jaw, and have the cam ipivoted between them. When thecam is lying down the ends of the jaws are sufficiently far apart toallow any fluid to flow freely through the tube; but when it is raisedupward until its shorter end has passed the center of its motion, andthe stop 0 strikes against the jaws of the stirrup, the ends of the twojaws will be pressed nearly together with suflicient force to preventfluid of any kind from passing the clamp.

This device is intended to be applied especially to syringes, but isalso adapted for use in other connections.

Having thus described my invention, I claim- The combination of a stripof sheet metal, a, having a hole, I), through its center for the passageof the tube, and bent into shape so as to form a clamp, with the.stirrup e, cam t, and stop 0, substantially as shown and described.

in testimony that I claim the foregoing I have hereunto set my hand this21st day of May, 1877.

MORRIS MATTSON.

